2.4Ghz Wireless ISP DIY (Do It Yourself) HomeBrew WiFi Antenna Success.

How to Troubleshot WiFi, Wireless Network: When You are not able to See the Network in Scan List on Client

2010-03-12T17:23:00.001+05:00

Well your problem is about Routing Table.

Give us some more detailed info about your Router.
Manufacturer: Linksys, ASUS, Etc.
Model:
Networking Scenario: Your router itself connected to Internet or its connected with other ADSL, Cable Modem?

Do these simple steps to troubleshoot wireless connectivity

1- Login to your router Configuration page ( Most cases this is http://192.168.1.1)
2- Remove all security settings, WEP, WAP Etc.
3- Go to the Network Setting page and Add New Route. 192.168.2.1
4: Now if DHCP is enabled fine, otherwise you have to configure you Computer TCP/IP settings again to use this router as Gateway. ( IP : 192.168.2.* Subnet: 255.255.255.0 Gateway: 192.168.2.1 ) Where * is anything between 2 to 253.

Hope this would resolve your issue.
Many peoples who are new to Networking get stuck over this point. Your default route of router is 192.168.1.1 and its already busy and connected with your modem so you can't use it for your system connectivity for internet surfing. There you have to add a new route for your wireless Networks (WLAN ) or even for local area Networks (LAN),

_____________
Editing: Adding

One more problem is possible while you can not see your Wireless Network in Windows XP ,

2.4GHz Wireless network could be one of the following.

1- 802.11a
2- 802.11b
3- 802.11g (Have Back end Connectivity for 11b)
4- 802.11n (Latest) (Have Back End Connectivity support for 11b, 11g)

Your Access Point or Wireless Router is configured to use 802.11n
Your Wireless adapter in Windows XP is configured for 802.11b Connectivity.

Now if your Access Point is not configured to use back end support for 802.11g & 802.11b then your Wireless adapter in Windows XP would not be able to find that network.

If Your Wireless Access Point or Router is configured to Force connectivity to 802.11g then your client supporting 802.11b would not able to see or connect the network.

Thanks.

WiFi, Wireless Tool-Kit -:+:- OverView,Security,Cracking,Hacking,Safety, (All You must have to know to secure your Wireless Network.)

2009-03-27T23:08:00.007+05:00

Wifi AIO 2009 27 in 1 WiFi Tools & E-Books

Page 1:*

Comm View for WiFi v5.2484*
Pure NetWorks NetWork Magic 2*
Air Cr@ck*
AP Sniff*
Comm View*
Aerosol*
Easy WiFi Radar*
Boingo Wireless

Page 2:*

Get Wep Key Of Encrypted Wireless Connection*
WiFi Companion v2.10.4*
Net Stumbler*
WiFi H@ck Tools*
WiFi Internet Access Blocker*
iPig WiFi HotSpot VPN Security

Page 3:*

Hot Spotter v0.4*
Kismet* WDG*
AirShort v0.2.7e*
WiFi Hopper v1.2*
Wireless NetWork Ignition*
Wepwedgie - alpha*
Wep Cr@ckE-Books:*
O-Reilly Wireless H@cks*
System Cr@cking 2k*
FB! Teaches how to break WiFi*
Collection of H@cking Dictionary*
How to Cr@ck WEP

WiFi Troubleshooting: Low Signal & Weak Connectivity

2009-03-27T22:29:00.007+05:00

Some Troubleshooting tips for you to solve Low Signal and Weak Connectivity Issues...

I don't know what Wireless Router and Wireless card You are Using but I describe all the Troubleshooting Tips in General for all.

See around if a Microwave Oven or other Same frequency spectrum in Air like Card less Phone, Wireless Phone,
Login to your router settings http://192.168.1.1/ and user/pass is admin/admin for most of routers. and Make Surveys or Site Scan or Scan.. to see if there are some other Stronger Wireless signals with same Channels.
IF you find any other Wireless Networks with same channel like you have configured in you Router then change Your Routers Wireless Channel ...
Best channels are 1,6,11 to use these all are non overlapping channels.
One very important thing normally people don't know or take under notice. See there are different Wireless Channels Allocation in different parts of the world.Now you got an Access Point(Router) with 14 Wireless channels and your Laptops also with 14 Wireless Channels. in Country Settings.But your PC Wireless Adaptor is with 11 or 13 wireless channels.........There is a difficulty and lower connectivity.Make sure same country wide settings on Router and Wireless Adaptor.Hope this all would solve your problem...
You can check response time under different Packet values by using following CMD command. Go to RUN in your Start Menu... Type "CMD" without " " and hit the Enter button...Now you can see a black screen, There you have to type this command "ping 192.168.1.1 -t -l 65550" without " " and type it right after C:/documents user setting/user/ Where in command:192.168.1.1 (IP Address of Your Access Point)-t (Continues Ping)-l (Packet Size from 1 to 65500)
Now you can check the actual connectivity and quality of link for a wireless network connection using different packet size...

This is very helping for beginners to learn about Link Quality and what is Max packet size handling for that Wireless Link.

Wireless ISP DIY Project

2009-03-16T15:06:00.001+05:00

1-WISP DIY(DO it Yourself)2.4GHz
2-WISP DIY(DO it Yourself)2.4GHz
3-WISP DIY(DO it Yourself)2.4GHz
4-WISP DIY(DO it Yourself)2.4GHz
5-WISP DIY(DO it Yourself)2.4GHz

Continued I will post ASAP.

ONE MUST READ WIRELESS BASICS

2009-03-09T17:39:00.005+05:00

I am sure these PDF n HTML Slides will cover all neccesory knowledge for those who are about to start or already started a Wireless ISP or WiFi in their Towns and Community.

00-Intro To Wide-Area WiFi

01-Access Point Configuration

02-Antenna Basics

03-Basic Antenna Theory

04-Basic Radio Physics

05-Wireless Infrastructure and Topologies

06-Basic Channel & Modulation

07-Comparative Use of Unlicensed Radio Spectrum

08-dB math-Link Budget Calculation

09-Interference & Co-existence

10-Radiowaves: RF Measurements

11-Introduction to WiMax

12-Introduction to VoIP

13-Long Distance WiFi Links

14-Long Reach WiFi Link

15-Low Power Systems Architecture for ICT4D

16-Mesh Networking Scenario

17-Network Management With Nagios(Linux Based)

18-Wireless Network Project Planing

Network Planning

2009-03-06T13:17:00.004+05:00

How to plan for a wireless network.Viability study. Implementation plan. Budget .Licenses and permissions. Import and acquisition of equipment. Contracts and quality assurance.

Author: TRICALCAR Team
Language: English
Formate: PDF
Updated: 30 Aug 08
Free: DOWNLOAD

Network Planning PDF

2009-03-06T13:10:00.002+05:00

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20_en_network_planning_presentation.pdf
154.43 KB
20_en_network_planning_hdt.pdf
254.79 KB

Network management with Nagios PDF

2009-03-06T13:04:00.001+05:00

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Network_management_with_Nagios.pdf
182.7 KB

Network management with Nagios

2009-03-06T13:00:00.003+05:00

Wireless networks, just like any other network, need management and monitoring.

Nagios is an open-source host and service monitor designed to inform you of network problems before your clients, end-users or managers do. It can check many features from simple uptime over internal parameters like CPU load or network interface activity to environmental information like temperature, with the help of SNMP plugins. In case of problems it can send notifications out to administrative contacts via email, instant message, SMS, etc.).

This presenation is a guide focused on Nagios on Ubuntu, and how to use it for the monitoring of wireless mesh networks.

Author: sebastian
Language: English
Formate: PDF
Updated: 6 Nov 08
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Mesh Networking PDF

2009-03-06T12:53:00.003+05:00

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mesh_networking_ICTP_2008_short_version.odp
3.44 MB

mesh_networking_ICTP_2008_short_version.pdf
3.28 MB

Mesh Networking

2009-03-06T12:48:00.004+05:00

Mesh Networking - Short version - 2008

What is a mesh?
Why mesh?
How to mesh? Routing protocols
Who can mesh? Hardware
Planning and implementing a mesh network
Mesh case stories
Flashing a Linksys router to run OpenWRT/Freifunk Firmware
Configuring an OpenWRT / Freifunk Firmware based mesh

Author: Sebastian Buettrich
Language: English
Formate: PDF
Updated: 07 Oct 08
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Low Power Systems Architecture for ICT4D PDF

2009-03-06T12:44:00.001+05:00

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Low Power Systems Architecture - Slides (PDF)
497.7 KB

Low Power Systems Architecture for ICT4D

2009-03-06T12:40:00.003+05:00

Exploration of the use of embedded systems to reduce power consumption for low power applications.

Author: Steve Okay
Language: English
Formate: PDF
Updated: 14 Aug 08
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Long Reach WiFi Link PDF

2009-03-06T12:34:00.000+05:00

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Long Reach WiFi Link - Slides (PDF)
5.49 MB

Long Reach WiFi Link

2009-03-06T12:30:00.002+05:00

Details about the 279 km Longest Range Connectivity wireless project linking Pico del Águila and El Baúl, Venezuela.

Author: Ermanno Pietrosemoli
Language: English
Formate: PDF
Updated: 14 Aug 08
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Long Distance WiFi Links PDF

2009-03-06T12:14:00.002+05:00

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17_en_long distance_ links presentation.pdf
6.69 MB
17_en_long distance_ links_hdt.pdf
3.43 MB
17_en_long distance_ links_hdt.pdf
3.43 MB
17_en_long distance_ links presentation_.odp
35.22 MB
17_en_long distance_hdt_v02.odt
5.87 MB

Long Distance WiFi Links

2009-03-06T12:11:00.002+05:00

By using external antennas and modifying the firmware, very low cost, long distance WiFi links can be built. High gain antennas require careful alignment, that most be done using signla generators and spectrum analyzers. A low cost version of these is presented.

Author:TRICALCAR Team
Language: English
Formate: PDF
Updated: 14 Aug 08
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Introduction to VoIP PDF

2009-03-06T11:27:00.002+05:00

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Introduction to VoIP - Slides (PDF)
1.21 MB
Call Flow in Asterisk - Diagram (PDF)
34.77 KB
Call Handling in Asterisk - Diagram (PDF)
387.52 KB
Asterisk Pattern -> Action - Diagram (PDF)
22.86 KB

Introduction to VoIP

2009-03-06T11:01:00.004+05:00

An introduction to Voice over IP technology. Subjects covered include:

Classic Telephony
Data Networks (Review)
VoIP Protocols
VoIP Hardware
VoIP Software
Examples
Web Links

Author:Steve Okay
Language: English
Formate: PDF
Updated: 14 Aug 08
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Introduction to Open Source PDF

2009-02-26T03:52:00.003+05:00

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OpenSource.pdf
3.67 MB

Introduction to Open Source

2009-02-26T03:44:00.002+05:00

This presentation is an Introduction to Open Source. It covers an introduction to the concept of "Open", and introduction to Linux and its features and an insight on the topic of Open Source and Development.

Author:Marco Zennaro, Carlo Fonda
Language: English
Formate: PDF
Updated: 15 Oct 08
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Introduction to WiMax PDF

2009-02-26T03:42:00.000+05:00

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Introduction to WiMax - Slides (PDF)
1.76 MB

Introduction to WiMax

2009-02-26T03:38:00.003+05:00

An introduction to WiMax technology.

Author: Ermanno Pietrosemoli
Language: English
Formate: PDF
Updated: 14 Aug 08
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Intro to Wide-Area WiFi PDF, PPT

2009-02-26T02:52:00.004+05:00

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Introduction to WiFi (PDF)
1.75 MB
Introduction to WiFi (PPT)
1.92 MB

Intro to Wide-Area WiFi

2009-02-26T02:40:00.003+05:00

This is a basic introduction to using WiFi for wide area networks. Link types (point-to-point, point-to-multipoint, etc.) as well as radio operating modes (master, managed, ad-hoc) are covered.

Author: Rob Flickenger
Language: English
Formate: PDF, PPT
Updated: 15 Oct 08
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Radiowaves: RF Measurements PDF

2009-02-26T02:36:00.004+05:00

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carlo_RFmeasurements.pdf
5.1 MB

Radiowaves: RF Measurements

2009-02-26T02:08:00.006+05:00

This very short lecture consists of two parts: the first part (15 minutes) is a basic introduction to radiowaves and RF signals, with definitions and terminology (frequency, wavelength, phase, amplitude, power, interference, modulation).

Author: Carlo Fonda
Language: English
Formate: PDF
Updated: 15 Oct 08
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Interference & Co-existence PDF

2009-02-26T02:06:00.002+05:00

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Interference & Co-existence - Slides (PDF)
1.69 MB

Interference & Co-existence

2009-02-26T02:01:00.005+05:00

Fundamentals of radio interference, and methods for identifying and mitigating it.

Author: Ryszard Struzak
Language: English
Formate: PDF
Updated: 14 Aug 08
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DIY WiFi Antennas HTML(Slides)

2009-02-26T01:42:00.001+05:00

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DIY WiFi Antennas - Slides (HTML)
2.11 MB

DIY WiFi Antennas

2009-02-26T01:36:00.005+05:00

Do-It-Yourself antenna designs, including omnidirectional, biquad, parabolics, and cantennas.

Author: Rob Flickenger
Language: English
Formate: HTML(Slides)
Updated: 14 Aug 08
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DIY WiFi Antennas

2009-02-25T22:26:00.001+05:00

Do-It-Yourself antenna designs, including omnidirectional, biquad, parabolics, and cantennas.

dB math and Link Budget Calculation PDF

2009-02-24T10:36:00.002+05:00

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Link_Budget.pdf
1.19 MB

dB math and Link Budget Calculation

2009-02-24T10:30:00.003+05:00

This presentation is on dB math (why do we use dBs?, examples of calculations with dBs, etc) and on Link Budget Calculation (how far can a wireless link go?, what gain should my antenna have, etc).

Author: Marco Zennaro, Carlo Fonda
Language: English
Formate: PDF
Updated: 15 Oct 08
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Comparative Use of Unlicensed Radio Spectrum HTML(Slides)

2009-02-24T10:24:00.004+05:00

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Comparative Use of Unlicensed Radio Spectrum - Slides (HTML)
799.99 KB

Comparative Use of Unlicensed Radio Spectrum

2009-02-24T10:16:00.005+05:00

Visualizing how different devices make use of the available radio spectrum.

Including:

DSSS vs. OFDM vs. frequency hopping
802.11 channels
Using a Wi-Spy or spectrum analyzer to detect interference.

Author: Rob Flickenger
Language: English
Formate: PDF
Updated: 8 Oct 08
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Basic Channel & Modulation PDF

2009-02-22T22:21:00.003+05:00

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Channel & Modulation Basics - Slides (PDF)
2.68 MB

Basic Channel & Modulation

2009-02-22T22:11:00.004+05:00

An introduction to digital modulation,

including:

Relevant modulation schemes
Geometric representations
Coherent & Non-Coherent Detection
Modulation spectra

Author: Ryszard Struzak
Language: English
Formate: PDF
Updated: 14 Aug 08
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Basic Wireless Infrastructure and Topologies PDF

2009-02-22T22:06:00.001+05:00

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Basic Wireless Infrastructure and Topologies - Handout (ODT)
1.33 MB
Basic Wireless Infrastructure and Topologies - Handout (PDF)
1.2 MB
Basic Wireless Infrastructure and Topologies - Additional Resources (ODT)
14.47 KB
Basic Wireless Infrastructure and Topologies - Additional Resources (PDF)
237.33 KB
Basic Wireless Infrastructure and Topologies - Copyright (ODT)
15.72 KB
Basic Wireless Infrastructure and Topologies - Copyright (PDF)
241.72 KB
Basic Wireless Infrastructure and Topologies - Trainer's Notes (ODT)
14.3 KB
Basic Wireless Infrastructure and Topologies - Trainer's Notes (PDF)
235.39 KB
Basic Wireless Infrastructure and Topologies - Slides (ODP)
629.33 KB
Basic Wireless Infrastructure and Topologies - Slides (PDF)
988.59 KB

Basic Wireless Infrastructure and Topologies

2009-02-22T21:49:00.005+05:00

A high level introduction to wireless modes and topologies, based around real life cases, and supplying basic knowledge about setup of such infrastructures.

Author: Sebastian Buettrich, Alberto Escudero Pascual
Language: English
Formate: PDF
Updated: 15 Aug 08
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Basic Radio Physics PDF

2009-02-22T21:44:00.002+05:00

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Basic Radio Physics - Handout (ODT)
1.33 MB
Basic Radio Physics - Handout (PDF)
1.2 MB
Basic Radio Physics - Additional Resources (ODT)
14.47 KB
Basic Radio Physics - Additional Resources (PDF)
237.33 KB
Basic Radio Physics - Copyright (ODT)
15.72 KB
Basic Radio Physics - Copyright (PDF)
241.72 KB
Basic Radio Physics - Trainer's Notes (ODT)
14.3 KB
Basic Radio Physics - Trainer's Notes (PDF)
235.39 KB
Basic Radio Physics - Exercises (ODT)
13.26 KB
Basic Radio Physics - Exercises (PDF)
235.97 KB
Basic Radio Physics - Answers to Exercises (ODT)
16.64 KB
Basic Radio Physics - Answers to Exercises (PDF)
240.54 KB
Basic Radio Physics - Slides (ODP)
629.33 KB
Basic Radio Physics - Slides (PDF)
988.59 KB
Basic Radio Physics - Slides with Exercises (ODP)
1.56 MB
Basic Radio Physics - Slides with Exercises (PDF)
821.01 KB

Basic Radio Physics

2009-02-22T21:26:00.005+05:00

A general introduction to basic physics relevant for wireless networking.

Author: Sebastian Buettrich
Language: English
Formate: PDF
Updated: 14 Aug 08
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Basic Antenna Theory

2009-02-22T21:00:00.012+05:00

Understanding the operation and design of microwave antennas.

Discussion includes:

Review of basic antenna types
Radiation pattern, gain, polarization
Equivalent circuit & radiation efficiency
Smart antennas
Some theory
Summary

Author: Ryszard Struzak
Language: English
Formate: PDF
Updated: 7 Oct 08
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Basic Antenna Theory PDF

2009-02-22T20:53:00.007+05:00

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Basic Antenna Theory - Slides (PDF)
1.62 MB

Antenna basics PDF

2009-02-22T20:41:00.008+05:00

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carlo_antennabasics.pdf
5.54 MB

Antenna basics

2009-02-22T20:32:00.008+05:00

This lecture provides a "short and simple" introduction to antennas (for WiFi at 2.4 and 5 GHz), with rough definition of terminology and characteristics of simple antennas (omni, directive, reflector)

Author: Carlo Fonda
Language: English
Formate: PDF
Updated: 15 Oct 08
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Access Point Configuration PDF

2009-02-21T20:10:00.003+05:00

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Access Point Configuration - Handout (ODT)
55.89 KB
Access Point Configuration - Handout (PDF)
385.47 KB
Access Point Configuration - Additional Resources (ODT)
13.78 KB
Access Point Configuration - Additional Resources (PDF)
234.12 KB
Access Point Configuration - Appendix (ODT)
17.79 KB
Access Point Configuration - Appendix (PDF)
677.8 KB
Access Point Configuration - Copyright (ODT)
15.95 KB
Access Point Configuration - Copyright (PDF)
241.78 KB
Access Point Configuration - Trainer's Notes (ODT)
15.22 KB
Access Point Configuration - Trainer's Notes (PDF)
235.79 KB
Access Point Configuration - Slides (ODP)
47.19 KB
Access Point Configuration - Slides (PDF)

Access Point Configuration.

2009-02-21T20:01:00.008+05:00

How to configure wireless access points and routers based on general principles and clear motivations.

Author: Onno Purbo, Sebastian Buettrich

Language: English
Formate: PDF
Updated: 19 Aug 08
DOWNLOAD

Wireless Basics Resource.

2009-02-20T08:43:00.009+05:00

Since I am not getting much time to write down all my WISP Project. I am to include a list of Wireless Basics PDF, PPT and other Resources under One Must Read Wireless Basics page for those who really interested in this project. I will Upgrade it by adding some more links within a few days. All Downloads are Free.

I WILL TRY MY BEST TO COMPLETELY WRITE DOWN THIS BLOG AS SOON AS POSSIBLE.

Please do understand one thing there is nothing in WISP if you don't get a good hand over the knowledge of Wireless Basics. So all you need is a thrust to read and research. Thanks. (Wicky)

See You Friends Soon.

Problems I Was to Face on 2.4GHz Client Side Installation.

2009-02-15T23:10:00.006+05:00

In my last post I told you result was like all the setup is just failed.
And all my money and time is wasted.

WiFi or WISP Project Failed Due to All these reasons.

No Signal at first then after a little hard work by changing the location iron poll from one corner of room to other one and raising it at more high after all this very very poor signal detected in my Access Point’s Web Panel.
When a poor signal detected I tried again and again to connect with network but no gain.
Distance from D-Link Omni to TP-Link Omni was less than 1000 Feet with a clear line of sight.
When there is a very poor signal with out connectivity at 1000 Feet how my setup going to work for a longer distance.
Signal was like 3dBi. (My Experience: At least 5 dBi Signal is required for a weaker connectivity, but signal must be with a good Quality.)

Signal Strength and Signal Quality both are different things. Strength is power of signal in dBi units. But Quality is depending on Noise or any other distortion and overlapping of other 2.4GHz frequency channels.